Power line lift pole



Dec. 15, 1953 w. B. CRAWFORD POWER LINE LIFT POLE 5 Sheets-Sheet 1 Filed Oct. 51, 1950 Wayne 8. Crawford INVENTOR.

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Dec. 15, 1953 w, CRAWFORD 2,662,730

POWER LINE LIFT POLE Filed Oct. 31, 1950 3 Sheets-Sheet 2 3 6 Fig.2 l

Wayne 8. Crawford mvmron Dec. 15, 1953 w. B. CRAWFORD 2,662,730

POWER LINE LIFT POLE Filed Oct. 31, 1950 3 Sheets-Sheet 5 Wayne 8. Crawford INVENTOR.

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being engaged by the gear 90. The lower end of the tubular section I6 is provided with a metal liner 8! to provide a smooth sliding surface. An outer liner (unshown) may be used for strength purposes at the lower end of section 16.

The gear 90 is mounted on a shaft 92, this shaft having square ends which pass through openings in the opposite sides of a casing 94. This casing is fixed, as by the U-bolts 96 which pass through openings in the flanges 98 and I of the case, around the tubular section I6 of the rod 70 and is so located that the gear 90 is passed through the opening 78 in the tubular section 16.

Ratchets I02 and I04 are fixed to the same shaft 92 as the gear 90 and are engaged by the spring loaded dogs I08 and H0. Therefore, when a winding tool is placed on either end of the shaft 92 and the shaft rotated, the inner section 84 of the rod I0 is operated outwardly of the tubular section I6 and held in place by the action of the ratchets and dogs. This lengthens the rod 10.

There is a guide provided for the rod I0, this guide consisting of a guide arm IIB which is pivoted to a bracket I I8, this bracket being fixed to the tubular section 16 of the rod 10. The guide arm H6 is passed through the sleeve 62 and may be held in place within this sleeve through the action of the said screw 66.

' Means for raising the rod I0 and hence a line which is held in the clamp 86 thereof, is attached to the bracket II8. The preferable means consist of a line I20, for example a rope or flexible cable, this line I 20 extending around the guide pulley 50 and also around the guide pulley I22 which is connected pivotally to the bracket H8. Ultimately, the end of the line I20 is fixed to a part of the pulley assembly I 22.

In operation the line is held in the clamp 86 and then the rod may be extended to the desired length. Upon pulling the line I20 the rod I0 is insofar as the mounting is concerned. The lower end thereof is arranged to be held to the lug 22 by means of the socket, but the rod 12 is held fixed to the mounting plate assembly by means of the bracket 68 which has a pin I34 passed through aligned openings therein. This pin also passes through openings in a plate I36 which is carried by the mounting assembly I38 on the tubular section of the rod I2.

In operating the device one or more of the rods may be used at the same time. It may well be that the pole has only one insulator thereon and, therefore, it is unnecessary to use the rods I0 and 74. If the pole has more than one insulator and if more than one line is to be moved, installed or otherwise handled, more than one of the illustrated rods may be employed.

Having described the invention, what is claimed as new is:

For use with a power line pole, an attachment for lifting a power line on the pole comprising a support attachable to the pole, a telescopic extensible rod including outer and inner sections, means swivelly connecting the outer section to said support for vertical swinging of said extensible rod, means on the inner section for holding a line, means operatively connected to said sections for extending the extensible rod, a mounting plate attachable to said pole above said support, a bracket on said inner section, a cable and pulley for swinging said extensible rod connected to said bracket and mounting plate to cause vertical swinging of the extensible rod upon extension of said rod, and a guide rod for said eXtensible rod pivoted to said bracket and slidably and swivelly connected to said mounting plate for pivotally operated about the lug 24 as a pivot point, this action causing the outer end of the rod I0 to be moved in an arc, carrying with it the line which is held by the clamp 86. g

The rod I4 is of identical construction to the rod I0 and operates in an identical manner. The guide arm I26 for the rod I4 passes through the sleeve 60 and is held in place in selected positions by means of the set screw 64.

The rod I2 is of slightly different construction sliding by extension of saidextensible rod.

WAYNE B. CRAWFORD.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 363,476 McKee May 24, 1887 644,884 Wrigley Mar. 6, 1900 891,796 Cooper June 23, 1908 979,514 Kray Dec. 27, 1910 984.670 Heedwell Feb. 21, 1911 2,428,186 Warwick Sept. 30, 1947 2,571,246 Hubbard Oct. 16, 1951 

